Drier.



G. E. SCOTT.

DRIER.

APPLICATION rILIzD JAN. 29, 1912.

Patented Sept. 24, 1912.

2 SHEETS-SHEET 1.

G. E. SCOTT.

DRIER.

y APPLICATION FILED JAN. 29, 1912. 1,039,449. I Patented sepn.24,1912.

2 SHEETS-SHEET Z.

fag 4v Unrrnn STATES `'Patrizia'frI OFFICE.

GEORGE E. SCOTT, OF CHICAGO, ILLINOIS.

To all-whom t mag/ concem:

DRIEB.

Be it known thatI, GEORGE E. Sco'i'r, a citizen of t-he United States,residing in Chicago, in the county of Cook and State of Illinois, -haveinvented a new and useful Improvement in Driers, of which the followingispa specification.

This invention relatesto improvements in driers which are particularlyadapted for drying corn on the cob, grain, beans or similar articles.

. The object of this invention is to provide a. structure `or devicewhich will dry grainl .open at its top end and being provided at itsbottom with aV plurality of movable doors or gates, and a source ofcompressed airV adapted to be heated by any suitable meanssuch as asteam coil, the source of compressed a1r and steam coil being locatedwithin the interior of the drum. Further improvements in connectiontherewith consist of a hopper below the drum adapted to catch thematerials as they are dropped from the drum, and an endless conveyerbelow the hopper onto which the dried materials are dropped and conveyedto other arts of the factory, means for reciprocating the shaft and thedrum therewith, and a solid metal band and cap located on the interiorand top of the drum.

The invention furthermore consists in the improvementsin the parts anddevices and in the novel combinations of parts and devices herein shown,described'or claimed.

In the drawings forming ,a part of this specification, Figure 1 is avertical, diametr1cal section of an apparatus embodying my improvements.Fig 2 is a section' taken on the line 2-2 of Fig. 1, looking in thedirection of the arrows. Fig. 3 is a horizontal specification of LettersPatent. l Patented sept. 24, 1912.

Application filed January 29, 1912. Serial No. 674,042-

sectional view, taken on the line 3--3 of Fig. 1, looking in thedirection of the arrows, and Fig. 4 is an' enlarged detail view, illus`trating the bearing for the vertical shaft and the cam for oscillatingthe same.

In the drawings, 10 denotes any suit-able form of hopper and adapted tosupport a jointvor other form of supporting member 11, on which ismounted a block 12, adapted to support a thrust ball bearing 13 andsustain a vertical, rotatable shaft 14, the upper end of the shaft 14being slidably mounted /in a bracket or bearing 15 secured to anysuitable portion' of the flooring 16. Mounted`on the blockV 12 is aplate 17 through which the reduced end 18 of the shaft 14 is adapted toloosely slide up and down and operated as by meansof a cam 19, rigidlyattached to a shaft 20 in any suitable manner, having a crank or handle21 at its outer v end, whereby the shaft '20 may be rotated andreciprocate theshaft 14 up and down whenever it is found necessarytoshake the contents of the drum in order to loosen the same and assistin the removal of the icontents through the bottom. Secured to the upperend of the shaft 14 is a suitable pulley 22 adapted to be driven as bymeans of a belt 23. Secured to the shaft 14 and rotatable therewith islan annular drum 24, which is shown in the form of afrustum of a hollowcone, but which may be of any other suitable shape, the same com risinga frame composed of a plurality o vertically extending exterior angleirons 25, interior, vertically extending angle irons 26, interior andexterior bands or rings 27 and 28, the same being secured together byany suitable means, such as rivets. Mounted on this structural. ironframework are inner and exterior walls 29 and 30, the same beingcomposed of wire mesh of heavy stock. rIhe inner wall 29 is clindrical., whereas the outer wall 30 is conlcal so that the annulardrum tapers from the bttom toward the top, whereby, when the material isto be let out of the drum, the same will be prevented from jamming andwill readily fall through the openings in the bottom of the drum. Thebottom of the drum is also covered with wire ,mesh 31, and is providedwith a plurality of doors 32, the same being slidably mounted insuitable guides 33, each of said doors being provided with a handle 34,-Whereby the Same may be drawn out when desired. The upper end of theamular drum is open, and the material or articles to be dried areadapted to be fed into the drum through this open" end `from chutesmounted in the floor 16. Located within the inner or interior wall 29 ofthe annular drum is a perforated pipe 36, the same being connected withany suitable fsource of. supply of `compressed air or other gas, andadapted to have the supply regulated as by means' of a valve 37.Adjacent the air pipe v36 and surrounding-the shaft 14 is a coil ofsteam pipe 38 also connected to any suitable source oI steam supply andadapted to be regulated by the valve 39. t

In" practice, I have found, if the hopper when started is completelyfilled with the rain or other articles, that as the moisture 1sgradually driven off, the bulk of the material decreases or shrinks andleaves an unfilled space at the upper end of the hoper. In order,therefore, .to prevent .the @ated air or gas from passing out` throughthis unfilled space, instead of being forced .through the inner andouter porous walls of the'drum and thereby'thro-ugh `the material, Ihave provided a plate 40 which extends overl and covers -the inner openend i .of the drum, and a band of met-a1. 4:1 /extending down a shortdistance from the top along the interior of the drum.

Infoperation, the drum, with all the bottom doors closed, is-lled `withthe corn on the cob,or other materials or articles to be dried from the`chutes 35, and the drum then rotated at aspeed approximating fiftyvrevolutions per minute. The .air Aor other gas coming from the pipe36,upon being heated, rises 'and is forced out through the 4,porous innerwall of the annular drum, and

then circulates between the articles or materials in the hopper, andfinally passes out through the outer porous wall of the druml or throughthe open top or porous bottom thereof. The heated a1r in passing fromthe yinterior to the exterior of the drum nism which I have devised has,in practical operation, proved .extremely efficient, and byactualexperiment, has dried in twenty-four hours the same quantity ofmaterial which in former devices has required .ninety-six;

hours, and has produced `a more uniform and satisfactory product, anddoes lnot blister the materials in the drum at any i I .have shown myinvention as appliedto one form of structure which is merelyillustrative, and it is obvious that many changes and modifications maybe made without de.

' contemplated as fairly fall within the scope of the' appended claims.

I claim p 1. In a drier, in combination, a vertical, annular, rotarydrum having portions of its interior and exterior walls porous, through4which are adapted to pass gases, a gas-heating device located withinsaid drum, and means for rotating the drum. y

2., In a drier, in combination, an annular drum f having porous walls,and provided with an opening at each end thereof through which thearticles or material .being dried may be admitted and taken out, andgasheating means located within said drum.

3. In a drier, in combination, a rotary drum adapted to allow gases topass therethrough, means for supplying a heated gas to said drum, andmechanism for giving said drum a reciprocating movement transverse toits plane of rotation.l

4. In a drier, in combina-tion, an annular drum having portions of itsinterior andv exterior walls porous and through which gases are adaptedto pass, and a gas-heating device, said drum being non-porous plateextendlng over one end of the inner wall of thedrum.

provided with a 5. In a drier, in combination, a rotary,

hollow, vertically disposed 'drum having one of its Walls cylindrical,and the other conical, said wallsv having portions'- thereof porous,whereby gases are adapted to pass therethrough, and means for 'supplying'a heated gas to said drum.

6. In a drier, in combination, a rotary, hollow, vertically disposeddrum having its interior wall cylindrical and its outervwall conical,said walls having portions thereof porous, whereby gases are adapted topasstherethrough, and gas-heating means 1o- 'cated within said drum.

plying a heated gas to said drum, and mechanism for, reciprocating saidshaft.

p 9. In a drier, in combination, an annular, vertically disposed drumhaving porous walls through which gases are adapted to pass, and meansfor rotating said drum, the

area of the annular section at the bottom of the drum being larger thanthe area of the annular section at the top, whereby the yably mounted inbearings, means for supgrain or other material is prevented fromclogging in its passage from the top to the bottom of the drum.

10. In a drier, in combination, an annular,

vertically disposed drum having porous Walls, means for rotating saiddrum, said drum being provided with a non-porous band along the innerWall thereof near the top, and means for supplying a heated gas lto saiddrum.

ed to pass means for supplying a heated gas to said drum, mechanism forrotating said drum, a' movable door at one end of the drum, anda hopper.

. 13. In a drier, in combination, a verticall disposed rotatable drum,`having Wire mesii interior and exterior spaced Walls means for supplyinga heated gas to said drum, said means being located at the lower yendvofthe drum, a shaft upon which said drum is mounted, and means forreciprocating said shaft.

14. In a drier, in combination, a rotatable drum having Wire mesh Wallsthrough which are adapted to pass gases an airsupply, and air heatingmeans, said drum having a movable door in the bottom thereof and beingtapered from bottom to top.

15. In a drier, in combination, a rotatable, vertically disposed,annular drum having Wire mesh Walls, and having an opening in the tothereof and provided with a door at the ottom end, a non-porous plateextending over and closing the inner portion of the drum at the topthereof, a nonorous band forming a portion of the interlor Wall of thedrum and disposed at the top portion thereof, a hopper, air supply`meansand air heating means.V

16. In a drier, in combination, an annular, rotatable drum,v a verticalshaft upon which said drum is mounted, said drum being provided withinterior andl exterior porous Walls through which gases are adapted topass, and being tapered from bottom to top, said drum being providedwith an opening at the top thereof, and having a movable door-1n thebottom, an air supply,

air heating means, and mechanism for reciprocating said shaft. 4

17. In a drier, in combination, a vertically dis osed, hollow, annularrotary drum having oraminous inner and outer Walls, the outer Wall beingexposed freely to the atmosphere, and means for' supplying a heated gasto the interior of the said drum, whereby the gas will pass firstthrough the inner wall, then through the material being dried betweenthe Walls, and at last through the outer Wall to the atmosphere.

GEO. E. SCOTT. Witnesses:

PEARL ABRAMS, H. M.l MUNDAY.

